Abstract:

The emergence of blockchain has changed the mode of social network information propagation, such as user trust and the forwarding probability of information propagation. Therefore, on the basis of the traditional social network information propagation model, by focusing on the analysis of user behavior patterns, firstly, the forwarding probability is optimized based on user trust and economic incentives. Secondly, a contract status node is added to explain the user’s rationality, based on this, it proposes a blockchain social network information propagation model. Finally, Theoretical analysis and simulation results show that the model has better stability and sensitivity in the information propagation process of the blockchain social network, and the node attribute change trend is closer to the real network. So, it can better simulate the spread of information in the social network in the blockchain environment.

Key words: blockchain, social network, information propagation, epidemic model, stability, sensitivity

摘要：

区块链的出现使得社交网络信息传播的模式发生了改变，如用户信任度、信息传播的转发概率等。因此，在传统社交网络信息传播模型的基础上，通过对用户行为模式的着重分析，基于用户信任度和经济激励等影响因素优化了转发概率；新增了合约状态节点解释用户的理智性，基于此提出区块链社交网络信息传播模型。理论与仿真分析表明，该模型在区块链社交网络的信息传播过程中具有较好的稳定性和敏感性，节点属性变化走势更加接近真实网络，能够较好地模拟区块链环境下社交网络中信息的传播规律。

关键词: 区块链, 社交网络, 信息传播, 传染病模型, 稳定性, 敏感性